d = dim F
i1 : F = hirzebruch 3 o1 = {ambient dimension => 2 } number of generating cones => 4 number of rays => 4 top dimension of the cones => 2 o1 : Fan
i2 : dim F o2 = 2
The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/OldPolyhedra.m2:8036:0.